Rotary valve



Feba '25, y:1930. R. A. WINCHESTER 1,748,267

" ROTARY VALVE Filed Jan. 32 1928 2 Sheets-Sheet l Inventor R. A.WINCHESTER ROTARY VALVE 2 Sheets-Sheet Fil'ed Jan'. 23, 1928 In ve n for14076/76516 Hag/www4 By Atlorney Feb. 25, 1930.

[1.-itenteclyy Feb. 25,:71930,

. fU-NITFE' SfTATEsPATi-:NT OFFICE i Application kfiled January 23,1928. Serial No. 248,707.

. c present invention relates to improve- In order that the generalassembly and reyments in `rotary valves for `use in internal lation ofparts may readily be understood I combustion engines. The primary objectof have illustrated a four-cylinder engine of the invention is theprovision of a rotary usual type in which the cylinders are desig- -5valve device in the head of the engine by nated as 1, 2, 3 and et andthese cylinders are 55 f means of which the fuel is distributed to thefired in any usual order. The pistons are i cylinders of the'engine andalso by rmeans of Vdesignated 5 and the crank case 6 of the mowhichtheexhaust gases are transferred from tor has the usual crank shaft 7 fromwhich the the vcylinders of the engine to the exhaust drive chain 8 forthe valve is operated yand "l manifold., In carrying out my invention Ithis chain operates a valve wheel 9 for rotat- 60 y provide a novelconstruction for the engine ing the valve in the top or head of theenhead and a novel construction for the rotary gine.

valve as will be hereinafter more fully point- A usual type ofcarburetor 10 is employed ed out andclaimed. i for furnishing thefuelthrough the intake .l InV the accompanying drawings I haveilmanifold which .comprises branches 11 to 65 lustrated one completeexample of the physicylinders 1 and 12 to cylinder i and the inter-l ical embodimentl of my invention in connecmediate branch 13 to the twointermediate tion with a four-cylinder internal combustion cylinders 2and 3.

engine, but it will b e understood that the Y yThe exhaust pipe let hasa lbranch 15 yfor LO number of cylinders may be varied and my receivingthe gases of combustion from the 70 4*invent-ion is therefore adaptedfor use with cylinders 1 and 2 and a branch 16 receives the types ofengines other than the four-cylingases of combustion from cyinders 3 and4.

der engine illustrated in the drawings. The head of the engine or motoris conven- The drawings show the parts combined iently made up insections comprising the two and arranged according to the best mode Icylindrical end sections 17 and 18 and an in- 75 i 'have sofar devisedffor the practical applicatermediate section 19, the parts being boltedtion Vof the principles of the invention. together and provided with theusual water- Figure 1 is a view in elevation showing a jacket 20 forcooling the'motor head. f

four-cylinder engine equipped with the valve In Figure 3 two exhaustoutlets 21 and 22 mechanism of my invention@ vare shownin the sections17 and 18,'respec- 80 Figure 2 is a top plan view of the parts intively. i y Figure 1. The rotary valve is supportedy to rotate Figure 3is alongitudinal vertical sectional within the sectional head and itcomprises view at line 3-'3`ofFigure 2.l two rigidly joinedsections sothat the valve Figure ..4 'is an enlarged transverse vertical .mayreadily be assembled or dismantled with 85 sectional view at line 4 4 ofFigure 3 showfacility when necessary, and the intake maningthe exhaustopen. ifold is designedto supplythe fuel directly l Figure 5 is atransverse vertical sectional to the two end cylinders and to the twointerview aty line 5-5`of Figure 3 'showing one of lmediate cylinders inorder that the fuel gas lthe intakes open. Q will have a minimumdistance to travel toy 90 Figure 6 is a transverse vertical'sectionalthe respective cylinders. f

viewat line 6 6 of Figure 3 showing one of `Within the central section18 a walled the exhaust ports closed. structure 23 is provided to formadistribut- Figure 7 is a sectional detail View at line ing chamber 24for the fuel gas, and the cyli 7-7 of Figure 3 showing one of the intakeindcr head is provided with inlet ports 25, 95

. portsy closed. 26, 27 and 28to the respective cylinders 1,2, FigureV 8is an enlarged detail sectional 3 and 4f. These cylinders are alsoprovided view at the central -portion'of the cylinder withexhaust ports29, 30, 31 and 32 located head showing the intermediate lparts kof thein the engine head and passing through the rfrotary valve andconnections. valve casing 33. This valve casing is cylindrical 'in shapeand is fashioned Within the sections 17 and 19 of the engine head toreceive the rotary valve. The rotary valve ris made up principally, asseen in Figure 8, of tWo cylindrical sections 34 and 35 and Within thesesections are provided a pair of alined sections 36 and 37 of reduceddiameter and jointed Within the chamber 24 by a rigid joint 38. Packingrings 39 are provided for these sections 36 and 37 within thedistributing chamber 24 and ball bearings 40 are provided in thesections 17 and 19 of thek engine head for the complementary annulargrooves 41 in the exterior faces of the valve sections 34 and 35. Attheir outer ends these valve sections 34 and 35 kare closed by meansofiend plates 42 of theengine head and the inner cylindrical sections 36and 37 project .out-

` vvardly through and beyond these end plates 42 of theengine head toformtrunnions upon 1 AWhich the rotary valve is journalled.

The

I wheel 9 is` rigidly fixed to one ofthese trunnions and the valve isturned` through the "drive chain 8 andcOnneCt-iOns to this wheel.l-lacked joints 43 are provided for the trunnions and braces 44 areprovided for the intake manifold branches supplying gas tothe ends ofthese trunnions. All of the radial inlet ports of t-he rotary valve aredesignated 45 and all of the radial exhaust ports of the rotary valveare designated 46, and ofcourse the inlet ports and exhaust ports in the`valve are arranged in predetermined positions with relation to thecomplementary ports. in the valve casing in order that tliepengine mayoperate Withy explosions in its cylinders kin vregular predeterminedorder.

tubes.

and means for supplying fuel to the joined ends of said tubes.

2. The combination with Aa sectional engine head comprising a pair ofspaced cylindrical vvalve casings andan intermediatel gas chamber, saidsectionshaving exhaust portsthere-V in, of a pair of spaced'cylindricalvalve` sec-' V tions, an inner central tube for each valve sec- Y tionhaving exhaust passages andits endsy yprojecting beyond the ends of thevalve sections, a rigid joint between the adjoining inner ends of saidtubes, means forsupplying 'A Y 'means for exhausting gases ofcombustionthrough said exhaust passages in said central p3.' An engine headklcomprising a pair of' outer sections and an inner section rigidlyjoined together, said inner 'section forming -spacedrcylindrical valvefcasings, a rotaryv valve comprising two spaced, enlarged, cylm .Y

kdrical sections in said spaced casings, a cen-k tral fueltube having aseparatel exhaust pas sage therethrough and located Within each valvesection, there being exhaust ports 'for coaction With said passage,means forming a rigid joint between saidr tubes, andintake ports asdescribed.

In testimony whereof I afx my" signature.

n. A. WINCHESTER. Y

The usual accessories are provided for coolf; Y

ing the engine head and packing the operat- .ing parts, and othernecessary accessories are lof Vcourse used although not herein' referredt0. f .1. Y

y* means of the chaindrive the rotary valveis turned continuously Whilethe ,engine is operated and the fuel charges are supplied.M4 to therespective' cylinders in regular order. l

The exhaust gases from the several cylinders are conveyed therefromthrough :the .rotating valvekand the "engine ,operates with a smoothnessand uniformity that insures 'eiii- Vciency With a minimum of consumptionof fuel gas.

Having thus fully described my invention what Iv claimas new and`desireto secure by .Letters Patent is): 4 l

alvalvecasing of 1. The combination with a pair of spaced cylindricalsections formingV 'a rotary valve, a central inner fuel tube Withvineach section having projecting-ends and provided kWith a separateexhaust passage therethrough, there being exhaust ports for ycoactionwith said passage, arigid joint between adjoining ends of saidtubes,means for supplying, fuel to the outer endsof tubes,

